You can use standard pulled rivets on the tank if you are not stingy with the proseal. The entire tanks on my bi-plane use standard pulled rivets. They are somewhat more prone to leak, but can be used if you are careful. Also when I cleaned out the slosh from my RV tanks, I used standard pulled rivets and have had no leaks. That was several years ago.
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Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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